{"product_id":"306675-14","title":"Atomic Barra M12 Head Stud OS Washer Kit","description":"\u003cp data-start=\"283\" data-end=\"592\"\u003eWhen you’re chasing big boost and big horsepower, you can’t afford to overlook the hardware that holds it all together. The \u003cstrong data-start=\"426\" data-end=\"470\"\u003eAtomic M12 Oversize Head Stud Washer Kit\u003c\/strong\u003e is engineered to address a common failure point in high-performance Barra builds — \u003cstrong data-start=\"554\" data-end=\"591\"\u003ehead crush around the washer seat\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"594\" data-end=\"801\"\u003eThese washers are precision-machined from \u003cstrong data-start=\"636\" data-end=\"654\"\u003ehardened steel\u003c\/strong\u003e and feature an \u003cstrong data-start=\"670\" data-end=\"702\"\u003eoversize 28mm outer diameter\u003c\/strong\u003e to better distribute clamping force and prevent deformation of the cylinder head under high loads.\u003c\/p\u003e\n\u003chr data-start=\"803\" data-end=\"806\"\u003e\n\u003ch3 data-start=\"808\" data-end=\"826\"\u003e✅ Key Features\u003c\/h3\u003e\n\u003cp data-start=\"828\" data-end=\"1004\"\u003e\u003cstrong data-start=\"828\" data-end=\"875\"\u003e✅ Oversize OD for Maximum Load Distribution\u003c\/strong\u003e\u003cbr data-start=\"875\" data-end=\"878\"\u003e• 28mm OD spreads the clamping force across a wider area\u003cbr data-start=\"934\" data-end=\"937\"\u003e• Reduces risk of cylinder head crush and uneven torque retention\u003c\/p\u003e\n\u003cp data-start=\"1006\" data-end=\"1164\"\u003e\u003cstrong data-start=\"1006\" data-end=\"1042\"\u003e✅ Hardened for High Torque Loads\u003c\/strong\u003e\u003cbr data-start=\"1042\" data-end=\"1045\"\u003e• Manufactured from heat-treated hardened steel\u003cbr data-start=\"1092\" data-end=\"1095\"\u003e• Won’t deform under extreme cylinder pressure or repeated torquing\u003c\/p\u003e\n\u003cp data-start=\"1166\" data-end=\"1387\"\u003e\u003cstrong data-start=\"1166\" data-end=\"1207\"\u003e✅ Engineered for Boosted Barra Builds\u003c\/strong\u003e\u003cbr data-start=\"1207\" data-end=\"1210\"\u003e• Perfect for Ford 4.0L DOHC 6-cyl engines\u003cbr data-start=\"1252\" data-end=\"1255\"\u003e• Designed to complement M12 head stud kits — including Atomic, ARP, and others\u003cbr data-start=\"1334\" data-end=\"1337\"\u003e• Race-proven in engines making 1000+ horsepower\u003c\/p\u003e\n\u003chr data-start=\"1389\" data-end=\"1392\"\u003e\n\u003ch3 data-start=\"1394\" data-end=\"1422\"\u003e🔧 Why You Need This Kit\u003c\/h3\u003e\n\u003cp data-start=\"1424\" data-end=\"1770\"\u003eIn high-boost applications, especially when using upgraded head studs and aftermarket head gaskets, the \u003cstrong data-start=\"1528\" data-end=\"1576\"\u003efactory washer footprint is simply too small\u003c\/strong\u003e. This leads to the washer \u003cstrong data-start=\"1603\" data-end=\"1644\"\u003ecrushing into the soft aluminium head\u003c\/strong\u003e, causing you to \u003cstrong data-start=\"1661\" data-end=\"1695\"\u003elose torque and clamping force\u003c\/strong\u003e — which in turn leads to \u003cstrong data-start=\"1721\" data-end=\"1769\"\u003eblown head gaskets or suspected stud stretch\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1772\" data-end=\"1952\"\u003eThis washer kit is designed to \u003cstrong data-start=\"1803\" data-end=\"1825\"\u003esolve that problem\u003c\/strong\u003e by spreading the load over a larger surface area. It’s a simple, affordable insurance policy against expensive engine failure.\u003c\/p\u003e\n\u003chr data-start=\"1954\" data-end=\"1957\"\u003e\n\u003ch3 data-start=\"1959\" data-end=\"1983\"\u003e📦 What’s Included\u003c\/h3\u003e\n\u003cul data-start=\"1984\" data-end=\"2044\"\u003e\n\u003cli data-start=\"1984\" data-end=\"2044\"\u003e\n\u003cp data-start=\"1986\" data-end=\"2044\"\u003eSet of 14x M12 Oversize OD (28mm) hardened steel washers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":59052860571729,"sku":"306675","price":129.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2115\/6365\/files\/Atomic_Head_Stud_Washer_Kit_M12_Oversize_OD_28mm_Ford_Barra_DOHC_92f11eab-3937-4e16-929b-37ffbd1ee4be.jpg?v=1779068423","url":"https:\/\/longboostperformance.com\/products\/306675-14","provider":"LongBoost Performance Parts","version":"1.0","type":"link"}